Tube-rolling machine.



J. w. SAGER.

TUBE ROLLING MACHINE.

APPLICATION FILED AUG. 10, 1916.

Patented Feb. 11, 1919,

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TUBE ROLLING MACHINE.

APPLICATION FILED AUG.I0.1916.

1,293,940. Patented Feb. 11, 1919,

4 SHEETS-SHEET 2.

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TUBE ROLLING MACHINE.

APPLICATION FILED AUG.IO,1916.

1 ,293,9%@, Patented Feb. 11, 1919.

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TUBE ROLLING MACHINE.

APPLICATION FILED AUG. 10, I9I6.

1,293,94Q. Patented 1 eb.11,191.

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JOHN W. SAG-ER, 0F CICERO, ILLINOIS, ASSIGNOR T0 WESTERN ELECTRIC COMPANY,

INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

TUBE-ROLLING MACHINE.

Specification of Letters Patent.

Patented Feb. 11, 1919.

Application filed August 10, 1916. Serial No. 114,241.

To all whom it may concern: Be it known that I, JOHN W. SAGER, a c1t1- zen of the United States, residing at Cicero, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tube-Rolling Machines, of

an improved, economical, and efficient machine for rolling tubes in which the tube is spirally constructed on a rotatable mandrel and in which the layers at each end of the spiral tube are glued to their superimposed layers.

The invention is illustrated in the accompanying drawings in which:

Figure 1 is a front elevation of the complete machine;

Fig. 2 is an end elevation of the right side of the machine;

Fig. 3 isa vertical section on the plane 33 of Fig. 1 looking in'the direction of the arrows;

Fig. 4 is a fragmentary front elevation with the paper gage and pasting leaves turned down;

Fig. 5 is a plan view of the power transmitting means with the housing broken away;

Fig. 6 is an end view of the clutch mechanism;

Fig. 7 is a front elevation of an auxiliary fixture for curling the ends of the paper before theyare inserted in the tube rolling machine;

Fig. 8 is an end elevation of this fixture, and

Fig. 9 is a plan view of the mandrel bearing.

The various operating parts of the machine are mounted on a cast housing which consists of the side walls 6 and 7 and the front and rear walls 8 and 9 respectively. Each of the side walls is fitted with a slotted bearing in which is journaled the rotatable mandrel 10. Slidably mounted on suitable shoulders on each of the side walls 6 and 7 is the plate 11, the front end of which has a concave surface the curvature of which is the same as the convex surface of the rotatable mandrel 10. The movement of the slidable plate 11 is controlled by the lever arm 12 which is pivotally mounted on the rear wall 9 of the housing by means of the pin 13 which is yieldably mounted in the slot 14 of the rear wall 9 by means of the spiral spring 15. The link 16 is pivotally mounted on the lever arm 12 at 17 and to the upwardly extending shoulder 18 of the slidable plate 11 at 19. Consequently when the lever arm 12 is moved toward the front of the machine the horizontal portion of the lever arm 12 and the link 16 will tend to assume the horizontal position illustrated in Fig. 3, and will thereby move the slidable plate 11 toward the front of the machine and in contact with the mandrel 10. The top surfaces of the side walls 6 and 7 of the housing contain the upwardly projecting lugs 21 and 22 respectively. In these lugs are mounted the brackets 23 and 24 in which 1s loosely ournaled the rotatable roller 25.

Pivotally attached to the right bracket 23 is the link 20, the lower end of which is pivotally attached to the upper end of the link 30 by the pin 26, the lower end of the link 30 belngattached to the housing by means of the pm 27. By means of this lever movement attached to the side of the housing the roller can be lowered so that its surface will come into contact with the surface of the mandrel 10 when the link 20 of the lever movement is thrown forward. Pivotally mounted on each side of the housing 6 and 7 are the levers 28 and 29 respectively. These levers are pivoted at about the center line of the machine, as shown in Fig. 3, and the rear ends of these levers are pivotally connected to upwardly extending links 32 and 3 1 respectively. The links 32 and 31 are pivotally secured to arms extending rearwardly from the horizontal plate 35, the plate 35 being pivotally mounted on the rearward end of the lugs 21 and 22 on the forward end of which are pivotally mounted the arms 23 and 21 respectively. The links of this lever movement are pivoted and interconnected so that when the cylindrical rod 38, which interconnects the front ends of the two links 28 and 29, is depressed the rear ends of the links 28 and 29 are moved up and through the interconnecting links 32 and 34, the plate 35 is swung about its pivot. and the stretcher bar 39 attached to the front end thereof is moved down into cont t Wi h its component stretcher bar 40.

plate 35 bymeans of the spiral springs such.

means .of the pins or plungers 52 and 53' which are yieldingly held in cavities in the as 54. The bar 40 is securely attached to the brackets 42 and 43 which are pivotally mounted in the slide plate 11 and yieldingly held by the springs 45 and 46. The function of the bars 39 and 40 is to tension the paper downward carries the bar 40 with it.

to be used in making the tube after it has been placed on the mandrel 10 and the slide plate 11- has been'moved forward by means of the lever arm 12 so that the paper is rigidly held between the front end of the slide plate 11 and the mandrel 10. The paper 41 is then inserted between the bars 39 and 40 as illustrated in Fig. 3. When the paper is so placed between these two bars.

the cylindrical rod 38 at the front of the machine is depressed, and this causes the dropping of the bar 39 which in its movem Ient he angle of contact between bars. 39 and 40 is such that bar 39 is given a sliding movement which causes it to recedeslightly on the plungers 52 and 53 and as this movement is in a direction away from the mandrel 10, it tends to pull the paper tight against the surface of the cylindrical mandrel. The movement of the plate 35 is controlled by springs such as 50 which cause this plate to assume its normal position as soon as the pressure is removed from the cylindrical rod 38.

The front plate 8 of the housing is equipped with the projectin lugs 55 and 56 between which is mounts the cylindrical rod 57. Mounted on said rod in the space between the inner surfaces of said lugs is the plate or leaf 58-which may be swung around the rod 57 as an axis into the position shown in Fig. 3. The plate may also be swung about the rod 57 so that its surface rests below the rod 57 as shown in Fig. 4. Mounted on the rod 57 at the outer surfaces of the lugs 55 and 56 is the cover plate or pasting leaf 60 which is pivotally mounted on the rod 57 as an axis and is capable of the same movement as the plate 58. The plate 58 is equipped at its lower'surface with a straight edge 61 which serves to -act as a guide in lining up the paper when it is put on the mandrel 10 and thus serves as a means to start the paper straight on the mandrel 10. The plate 60 is swung into position so as to cover the plate 58 when the paper has been placed on the mandrel 10 and properly trued up, at which time the paper is placed on the plate 60, which plate serves as a base for holding the paper when the adhesive is applied thereto. Loosely mounted between the side walls 6 and 7 of the housing is the rod 64, in the center of which is attached the electrical heating element 65. The lever arm 66 is se- 64, said rod being revolved whenever the lever arm 66. is moved. Any movement of the rod 64 carries with it the electrical heating .element65. To the front end of the electrical heating element 65 is attached the copper bar ,68 Which extends. across the front surface of the machine between the side walls 6 and 7 and which contacts with the surface of the mandrel 10 when the front end of the electrical heating element is tilted up by means of the movement of the lever arm 66. To the electrical heating element 65 is attached a cord which may be connected to any suitable source of electrical power for energizing the heating element.

Attached to the left side of the machine is the means for driving the mandrel 10 and its associated clutch mechanism. As indicated in Fig. 5, a disk 72 is attached to the 85 left .end of the mandrel 10, the outer surface of which contains two cylindrical projecting lugs 73 and 74. Cooperating with the disk 72 and the lugs 73 and 74 is the disk 75 which is likewise equi ped with cylindrical projecting lugs 76 an 77. The disk 75 is rigidly attached to the shaft 78, to the other end of which is attached the disk 79 equipped with the cylindrical projecting lugs 80 and 81. The shaft 78 is loosely fitted in the hollow shaft 33 and the hollow shaft 33 is journaled in the bearings 82 and 83, between which is mounted the pulley wheel 84. Projecting from the end surface of the hollow shaft 33 are the lugs 61 and 62 which coeperate with the lugs 80 and 81 to drive the shaft 78. The-pulley wheel is completely covered by a suitable housing 85. Due to the cylindrical projecting lugs attached to the disks 79 and to the end of the shaft 33 it will be evident that whenever any suitable means of power is applied to the pulley 84, the cylindrical projections on the disk 79 and the end surface of the shaft 33 will rotate between the same vertical planes and consequently the lugs on the shaft 33 will engage those on the disk 79 and the rotation of the shaft 33 will be transmitted to the shaft 78. Since the disk 75 is rigidly. secured to the end of the shaft 78, the lugs 76 and 77 thereon will cotiperate with the lugs 73 and 74 on the disk 72 to transmit the rotation to the mandrel 10. It will likewise be obvious that when the projecting lugs on the disks 72 and 75 are so placed that a line interconnecting the lugs on the disk 75 is substantially at right angles to the line interconnecting the lugs on the disk 72, the mandrel 10 and its associated disk may be readily lifted from its bearings in the machine. This arrangement is provided so that the tubes, after being rolled, may be readily slipped from the mandrel by completely removing the mandrel and tube from the machine. The left hand bearing of the mandrel is equipped with a slot 88 which rides in a pro ection 86 in the lower surface of the hearing which prevents lateral shifting of the mandrel 10 when it is suitably placed in position in its bearings. This is illustrated in Fig. 9.

Attached tothe outer end of the driving shaft is a clutch mechanism which consists of the disk 79 which has attached to one of its quadrants a braking member 91 e ui ped with the cam surface 90. The disc 9 is rigidl attached to the shaft 78 and the shaft 78 is slidably fitted in the hollow shaft 33. Registering with the end of the shaft 78 are the strong leaf springs 93 which are fastened to the lower end of the bearing bracket 95. Attached to the bearing bracket 95 is the bracket 96 in which is pivotally mounted the lever arm 97 to lWhlCh is secured the rod 98 which tends to pull the lever arm 97 into the dotted position shown in Fig. 6 due to a spiral spring inclosed in the housing 99. Fastened to the lever arm 97 by means of the screw 98 is the chiseled edged cam stop 100 which registers with the inclined cam surface 90 of the disk 79 when the lever 97 is in the dotted position shown in Fig. 6. When in this position the inclined surface of the disk 79 will ride over the inclined surface of the stop 100 and the shaft 78 will be forced out against the tension of the leaf springs 93. This will act as a brake on the shaft 78 which in turn will brake the shaft 33. Due to this braking action the belt will slip over the surface of the pulley 8 1 and hence stop the rotation of the shafts 33 and 78 and the mandrel 10.

The lever 97 is normally held in its outer position by means of the lever 101 which is equipped with a right angled slot which reg isters with thepin 102. This prevents the pulling of the lever 97 into its alternate position by the spring in the housing 99. When the lever 101 is thrown into its alternate position, as is indicated by the broken lines, the right angle shoulder of the lever 101 is thrown out of the line of movement of the pin 102 and the rod 98 is free to move the lever 97 into the braking position.

In order to prepare the paper so that it will be suitable for rolling tubes on the machine an auxiliary curling fixture, shown in Figs. 7 and 8, is utilized. This fixture consists of a base late 105 to each end of which is secured a racket such as 106 between which is mounted the metal plate 107. Secured to the front surface of the base plate 105 are the butt hinges 108 and 109, to the their outer ends with a nut and Washer, be-

tween which and the surface of the brackets holding the plate 107 are mounted spiral springs such as 115. These spiral springs serve to yieldingly hold the plate 110 against the plate 107.

In the operation of the machine the paper which is to be rolled on the tube is first inserted between the plates 107 and 110 of the curlin fixture shown in Figs. 7 and 8. This is rea ily done by pulling the arm 112 out to the dotted position indicated in Fig. 8, slipping the paper between the plates and then allowing the plate 110 to assume its normal position. The paper will then be held in the fixture as indicated by the broken line in Fig. 8. When the paper is in this position it is readily drawn from between the plates 110 and 107 over the edge of the plate 110 and in a direction substantially parallel to the plane of this plate. This will give the edge of the paper a curvature so that it may be readily fitted around the mandrel 10 of the tube rolling machine.

When the paper has been thus curled, the curled surface is placed around the mandrel 10 and the other edge of the paper is trued up with the straight edge 61 at the bottom of the gage leaf 58. The lever 12 is then drawn forward so that the slide plate 11 will bend and firmly hold the curved surface of the paper against the mandrel 10 when a coating of adhesive is applied to the curled portion of the paper. The paper is then raised from thegage leaf 58, so that the plate 60 may be swung into position, shown in Fig. 1, over the gage leaf 58. The paper is then laid on the plate 60 where the other end thereof is given a coating of adhesive which is used to glue the layers of the paper tube together. After this the paper is removed from the late 60 and placed over the edge" of the stretc er bar 40. The cylindrical rod 38 is then depressed which causes the bar 39 to register with the bar 40 and these two will then move in a direction away fromthe mandrel 10 and cause the paper to be The lever 97 is then actuated which releases the brake and permits the rotation of the mandrel 10. While the mandrel 10 is rotating the lever arm 66 is raised which causes the heated bar 68, attached to the end of the electrical element 65, to ride on the surface of the tube after it is rolled. This materially aids in the drying of the adhesive which is used to glue together the superimmeans of the lever 12. The heated bar 68 posed layers which constitute the Wall of the tube. The heating bar 68 in its upward movement strikes the under surface of the plate 58, and since the plates 58 and 60 are will drop back to normal as soon as the upward pressure isremoved from the lever handle 66. The rotating mandrel is then stopped by operating the brake lever arm 101 which Will hold the pulley 84 against further rotation by the belt.

The disk 72 is now rotated so that the cylindrical projections of this disk are so alined that the mandrel 10 may be readily removed without any interference from the cylindrical projections on the disk 75. The rolled paper tube which is slidably wound on the mandrel is then slipped therefrom when the mandrel is returned to the machine and the above operations are repeated for the rolling of the next tube. As the tubes are slipped from the mandrel they may be Inserted into closely fitting hollow tubes to allow the adhesive to properly set.

Although the machine which is illustrated in the attached drawings and described in the foregoing constitutes the preferred embodiment of the invention, it will be quite obvious that the invention is capable of many variations and applications without departing from-its spirit and scope.

What is claimed is: p

1. In a machine for rolling paper tubes, the combination with a rotatable mandrel, of means for stretching the paper on said mandrel, means operable to engage the paper on said mandrel and hold it in the stretched condition after the stretching means is released, and means cooperating with said mandrel to tightly roll the paper in a tube about said mandrel.

2. In a machine for rolling paper tubes, the combination with a rotatable mandrel, of means to fasten the end of the paper in a curve about said mandrel, means to stretch the paper about said mandrel, means operable to engage the paper on said mandrel and hold it in said stretched condition after said stretching means is released, and means cooperating with said mandrel to roll the paper in a tube about said mandrel.

3. In a machine for rolling paper tubes, the combination with a rotatable n'mndrel, of means to fasten the end of the paper about and hold it firmly pressed against said mandrel, means to gage the edge of said paper so it will roll straight about said pressed against the surface of said mandrel,

meansto gage the other end of said paper so it will roll straight about said mandrel, means to suitably hold the free end of the paper extending from said mandrel for the application of an adhesive, means to'stretch thepaper about said mandrel, means to hold the paper in the stretched condition after said stretching means is released, means to rotate said mandrel to form the paper into a tube, and means to heat the outersurface of said tube as it is revolved with said mandrel whereby the adhesive used to glue the superimposed layers of said paper will be rapidly dried.

5. In a machine for rolling paper tubes, the combination with a rotatable mandrel, of means whereby the end of the paper may be bent about said mandrel and. firmly pressed against the surface of saidgmandrel, means to gage the other end of': .s aid paper so it will roll straight about' sj'aid mandrel, means to suitably hold the free end of the paper extending from said mandrel for the application of an adhesive, means to stretch the paper about said mandrel, means 'to hold the paper in said stretched condition after said stretching means is released, means to rotate said mandrel to form the paper into a tube, an electrically heated means for heating the outer surface of said tube as it is rotated with said mandrel whereby the adhesive used to glue the superimposed layers of paper will be rapidly dried, and bearing means in which said mandrel is revolved and held from longitudinal movement also having open upper portions to permit ready removal of the mandrel so the tube may be slipped therefrom.

6. In a device of the character described, the combination with a rotatable shaft, of a rotatable mandrel, means for rotating said mandrel with said shaft. means whereby the end of a 'paer may be bent about said mandrel and Ermly pressed against the surface of said mandrel, means to stretch the paper about said mandrel, a roller cooperating with said mandrel for holding the paper in said stretched condition after the stretching means is released, a brakin means controlling the rotation of said sha t, and means whereby said braking means may be released to rotate said shaft and said mandrel to roll the paper in a spiral tube about said mandrel.

7. In a device of the character described, the combination with a rotatable shaft, of a rotatable mandrel, means for rotating said mandrel with said shaft, a sliding plate the end surface of which may be pressed against the surface of said mandrel to hold the end of a curled paper between said mandrel and said plate, a gage plate for truing the free edge of said paper so that'the paper will roll straight about said mandrel, a cover plate which may be swung into position above said gage plate andyvhich serves as .a base plate for holding saidpaper for the application of an adhesive, a stretcher bar located above and in parallelism with said mandrel, a second stretcher bar cooperating with said first bar, means for operating sai second bar whereby the paper will be stretched between said mandrel and said stretcher bars, a roller cooperating with said mandrel, means for moving said roller into operative relation with said mandrel whereby the paper will be held in said stretched condition about said mandrel when said stretching bars are released, and means for controlling the operation of said shaft to control the movement of said mandrel for the rolling of paper tubes thereon.

8. In a device of the character described, the combination with a rotatable mandrel,

of a slidable plate, means for moving said plate into contact with said mandrel whereby the end of a curled paper will be firmly held between the end surface of said plate and the curved surface of said mandrel, a gage leaf provided with a straight edge for truing the paper on said mandrel, a pasting plate for covering said gage leaf and which serves as a-base plate for applying-the adhesive to said paper, a stretcher bar mounted above and in parallelism with said mandrel, a second stretcher bar cooperating therewith, means for operating said second stretcher bar whereby the paper is stretched between said mandrel and said bars, a roller, means for moving said roller so that it will contact with the surface of said mandrel and hold the paper placed in position on said mandrel in a stretched condition after said stretchin bars are released, an electrically energize heating bar, means to move said bar into contact with said paper tube after it has been rolled on the mandrel for the urpose of drying the'adhesive and bearmg means for said mandrel from which said mandrel may be removed so that the papertube can be readily slipped therefrom.

9. Ifi a machine for rolling paper tubes, the combination with a rotatable mandrel, of a slidable plate, means to operate said plate whereby the end of the paper may be firmly held between said mandrel and said plate, a stretching means mounted above and in parallelism with said mandrel, a rotatable roller cooperating with said mandrel, means to operate said roller so that it will hold the paper in said stretched condition after the paper stretching means is released, and means to rotate said mandrel to form the paper into a tube.

' 10. In a machine for rolling paper tubes,

the combination with a rotatable mandrel, of a slidable plate operable to firmly hold the end of the paper between its end surface and said mandrel, a gage leaf fitted with a truing edge to gage the paper so that it will be rolled straight about said mandrel, a stretching means mounted above and in parallelism with said mandrel for stretching the paper between said stretching means and said mandrel, a rotatable roller cooperating with said mandrel, means to operate said roller so that it will hold the paper in said stretched condition after the stretching means is released, and means to rotate said mandrel to form the paper into a tube.-

11. In a machine for rolling pa er tubes, the combination with a rotatable s aft, of a rotatable mandrel which may be rotated by said shaft, means whereby a paper may be I bent about said mandrel and tlghtly held against its surface, a stretching means for stretching .the paper between said mandrel and said stretching means, a rotatable roller cooperating with said mandrel, and means to move said roller in contact with said mandrel whereby the paper is tightly stretched about said mandrel when it is rotated by said rotatable shaft.

12. In a machine for rolling paper tubes, the combination with a rotatable mandrel, of means to fasten the end of the paper about said mandrel, means for drawing said paper taut before rolling on said mandrel, and means for holding said paper taut after said drawing means 1s released and during the entire rollin of said tube.

13. In a machine for rolling paper tubes, the combination with a rotatable mandrel, of means to fasten the endof the paper about said mandrel, ositive means for holding taut said paper uring the entire rolling of said tube by said mandrel, heating means applicable at predetermined times to said tube as it is rotated with said mandrel, and means for operating said heating means.

In witness whereof, I hereunto subscribe my name this 1st day of Aug. A. D., 1916. 

